diff --git a/controllers/knowledge_upload_controller.go b/controllers/knowledge_upload_controller.go
index 0efd7b09c..5b86e6c90 100644
--- a/controllers/knowledge_upload_controller.go
+++ b/controllers/knowledge_upload_controller.go
@@ -11,7 +11,7 @@ type KnowUploadController struct {
 	web.Controller
 }
 
-func (c *KnowUploadController) snsUploadImg() {
+func (c *KnowUploadController) SnsUploadImg() {
 	callResult := &CallResult{}
 	files := c.Ctx.Request.MultipartForm.File["userfiles"]
 	isThumb, _ := c.GetBool("isThumb")